- Evidence of human-caused climate change has strengthened, with global temperatures, sea levels, and carbon dioxide levels rising sharply.
- Awareness of biodiversity loss has grown, with over 28,000 species now threatened with extinction.
- Issues around chemicals, waste, and pollution have become more pressing as industrialization and consumption have increased globally.
- The scale of global challenges like energy, water, and food security has expanded rapidly with continuing population and economic growth.
- New technologies like the internet, smartphones, and renewable energy have transformed societies and economies around the world.
- International environmental law